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/*
* Simple code to search for the enthalpy corresponding
* to a given value of a global parameter
*
*/
/*
* Copyright (c) 2003 Eric Gourgoulhon
*
* This file is part of LORENE.
*
* LORENE is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2
* as published by the Free Software Foundation.
*
* LORENE is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with LORENE; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
char chent_C[] = "$Header: /cvsroot/Lorene/Codes/Rot_star/chent.C,v 1.3 2014/10/13 08:53:58 j_novak Exp $" ;
/*
* $Id: chent.C,v 1.3 2014/10/13 08:53:58 j_novak Exp $
* $Log: chent.C,v $
* Revision 1.3 2014/10/13 08:53:58 j_novak
* Lorene classes and functions now belong to the namespace Lorene.
*
* Revision 1.2 2014/10/06 15:09:45 j_novak
* Modified #include directives to use c++ syntax.
*
* Revision 1.1 2003/09/08 15:12:06 e_gourgoulhon
* Initial version.
*
*
*
* $Header: /cvsroot/Lorene/Codes/Rot_star/chent.C,v 1.3 2014/10/13 08:53:58 j_novak Exp $
*
*/
// C++ headers
#include "headcpp.h"
// C headers
#include <cstdio>
using namespace Lorene ;
int main(int argc, char** argv){
if (argc < 2) {
cout <<
"chent : the value of the global quantity Q for which the enthalpy is searched "
<< endl << " must be given in argument !" << endl ;
return -1 ;
}
char* qchar = argv[1] ;
double qq ;
sscanf(qchar, "%lf", &qq) ;
cout << "Search of ent for Q = " << qq << " : " << endl ;
double ent1, ent2, qq1, qq2 ;
cout << " ent1, Q1 ? " ;
cin >> ent1 ;
cin >> qq1 ;
cout << endl << " ent2, Q2 ? " ;
cin >> ent2 ;
cin >> qq2 ;
double y1 = qq1 - qq ;
double y2 = qq2 - qq ;
double ent = ent1 - y1 /(y2 - y1) * (ent2 - ent1) ;
cout.precision(16) ;
cout << endl << "ent for Q = " << qq << " : "
<< ent << endl ;
return 0 ;
}
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